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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2009 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* -last fcntl
*/
#include <ast.h>
#ifndef fcntl
NoN(fcntl)
#else
#include <ls.h>
#include <ast_tty.h>
#include <error.h>
#if F_SETFD >= _ast_F_LOCAL
#if _sys_filio
#include <sys/filio.h>
#endif
#endif
#if _lib_fcntl
#undef fcntl
extern int fcntl(int, int, ...);
#endif
int
_ast_fcntl(int fd, int op, ...)
{
int n;
int save_errno;
struct stat st;
va_list ap;
save_errno = errno;
va_start(ap, op);
if (op >= _ast_F_LOCAL) switch (op)
{
#if F_DUPFD >= _ast_F_LOCAL
case F_DUPFD:
n = va_arg(ap, int);
op = dup2(fd, n);
break;
#endif
#if F_GETFL >= _ast_F_LOCAL
case F_GETFL:
op = fstat(fd, &st);
break;
#endif
#if F_SETFD >= _ast_F_LOCAL && defined(FIOCLEX)
case F_SETFD:
n = va_arg(ap, int);
op = ioctl(fd, n == FD_CLOEXEC ? FIOCLEX : FIONCLEX, 0);
break;
#endif
default:
errno = EINVAL;
op = -1;
break;
}
else
#if _lib_fcntl
op = fcntl(fd, op, va_arg(ap, int));
#else
{
errno = EINVAL;
op = -1;
}
#endif
va_end(ap);
return(op);
}
#endif
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